Corrugated pipe welding clamp

Abstract

The utility model belongs to the technical field of clamps, particularly relates to a corrugated pipe welding clamp, and aims to solve the problems that although an existing corrugated pipe welding clamp can clamp and fix two joints of a corrugated pipe, the corrugated pipe needs to be welded at 360 degrees, and after a part of the corrugated pipe is welded, the corrugated pipe needs to be unfixed, adjusted in angle and then fixed again for welding. According to the technical scheme, the device comprises a supporting plate which is installed on a machine table of the laser welding machine and used for supporting a corrugated pipe, two grooves are formed in the top of the supporting plate, a through hole is formed between the two grooves, a two-way screw rod is rotatably installed in the through hole, and the two-way screw rod is connected with the two-way screw rod in a sleeved mode. The two ends of the two-way screw are in threaded connection with moving blocks. The two bottom supporting mechanisms are welded to the tops of the two moving blocks. According to the utility model, the corrugated pipe can be conveniently fixed, the welding angle can be adjusted under the condition that the corrugated pipe is not fixed, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a bellows welding clamp. Background Art

[0002] Bellows primarily include metal bellows, bellows expansion joints, bellows heat exchange tubes, diaphragm capsules, and metal hoses. These bellows are primarily used to compensate for thermal deformation, reduce vibration, and absorb settlement deformation in pipelines. They are widely used in industries such as petrochemicals, instrumentation, aerospace, chemicals, electric power, water conservancy, and metallurgy. Using conventional welding fixtures for bellows is difficult due to the presence of corrugated plates blocking the outer edges. Inserting the four forks on the rear ring into the four notches on the front ring while ensuring uniform clearances is difficult to accomplish manually.

[0003] A search revealed that publication number CN205237396U discloses a welding fixture for an inner shift fork bellows. The fixture comprises a sleeve with an annular shoulder on one side of the sleeve. The sleeve diameter to the left of the shoulder is larger than that to the right. Four positioning bosses are evenly spaced on the outer circumference of the sleeve root at the left end of the shoulder. Four positioning grooves are evenly spaced on the axial outer circumference of the sleeve to the left of the bosses. The positioning grooves and bosses are arranged coaxially, one after the other. This ensures the correct positioning of the shift fork and the notch, ensuring that the welded bellows meets the requirements.

[0004] Although the existing bellows welding fixture can clamp and fix the two joints of the bellows, the bellows welding requires 360-degree welding. After welding a part, the bellows needs to be unfixed and the angle adjusted, and then re-fixed for welding, which reduces work efficiency. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the existing bellows welding fixture, which is that although the two joints of the bellows can be clamped and fixed, the bellows welding requires 360-degree welding. After welding a part, the bellows needs to be released and the angle adjusted, and then re-fixed for welding, which reduces work efficiency. A bellows welding fixture is proposed.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A bellows welding fixture, comprising:

[0008] A support plate is installed on the machine platform of the laser welding machine and is used to support the corrugated pipe. Two grooves are provided on the top of the support plate. A through hole is provided between the two grooves. A bidirectional screw is rotatably installed in the through hole. Both ends of the bidirectional screw are threadedly connected to a moving block.

[0009] Two bottom support mechanisms are welded to the tops of the two moving blocks and are used to support the two bellows that need to be welded;

[0010] Two rectangular shells mounted on the outside of the two bottom support mechanisms;

[0011] Two height adjustment mechanisms, cooperating with the two rectangular shells;

[0012] The two top pressing mechanisms are connected to the two height adjustment mechanisms and are symmetrically arranged with the two bottom supporting mechanisms, and are used to press and fix the corrugated pipe and control the rotation of the corrugated pipe.

[0013] Preferably, a servo motor is installed on the outer side of the support plate, the output shaft of the servo motor is fixedly installed to one end of the bidirectional screw, and both ends of the bidirectional screw are rotatably connected to the inner wall of the groove through bearings.

[0014] Preferably, the bottom support mechanism includes a support block, a plurality of strip grooves are opened on the top of the support block to form a plurality of support bars, an arc groove is opened on the top of the support block, and a plurality of balls are provided on the inner wall of the arc groove on the support bar. The bellows is supported by the balls, which can reduce the friction of the bellows when it rotates.

[0015] Preferably, the height adjustment mechanism includes a rectangular rod, which is slidably installed inside a rectangular shell. A receiving groove is provided at the bottom of the rectangular rod, and a linear motor is provided in the receiving groove. The output shaft of the linear motor is fixedly installed on the inner wall of the receiving groove, and the bottom end of the linear motor is installed on the bottom inner wall of the rectangular shell.

[0016] Preferably, the top clamping mechanism includes a top pressing block, which is fixedly mounted on the side of the rectangular rod. An arc-shaped pressing groove is provided at the bottom of the top pressing block, and a plurality of circular rollers are rotatably mounted on the inner wall of the arc-shaped pressing groove. Synchronous motors are mounted on the outer sides of the plurality of circular rollers, and the synchronous motors are mounted on the outer side of the top pressing block.

[0017] In the present invention, the bellows welding fixture has the following beneficial effects:

[0018] This solution places two bellows inside the arc-shaped grooves on two support blocks. Multiple support bars contact the recessed parts of the bellows and are supported by ball bearings. Two linear motors drive two rectangular rods to move downward, which in turn drive two top pressure blocks to move downward. The top pressure blocks press and secure the bellows via multiple circular rollers. A servo motor drives a bidirectional screw to rotate, which drives the two moving blocks closer to each other. The two moving blocks drive the two support blocks closer to each other, and the two support blocks drive the two bellows to contact each other.

[0019] This solution requires rotating the two bellows for angle adjustment. Six synchronous motors are started simultaneously to drive six rollers to rotate. The six rollers drive the two bellows to be welded to rotate for angle adjustment. The welding angle can be adjusted without releasing the fixed bellows, thereby improving work efficiency.

[0020] The utility model has a simple structure, is convenient for fixing the corrugated pipe, and can adjust the welding angle without releasing the fixed corrugated pipe, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of a bellows welding fixture proposed by the utility model;

[0022] Figure 2 The utility model proposed Figure 1 Schematic diagram of the structure viewed from above;

[0023] Figure 3 This is a schematic structural diagram of the rectangular rod, linear motor, top pressure block and related parts proposed in the utility model;

[0024] Figure 4 This is a schematic structural diagram of the support block, rectangular shell and related parts proposed in the present invention;

[0025] Figure 5 The utility model proposes Figure 4 Schematic diagram of the upward-looking structure.

[0026] In the figure: 1. Support plate; 2. Groove; 3. Bidirectional screw; 4. Servo motor; 5. Support block; 6. Arc groove; 7. Strip groove; 8. Support bar; 9. Ball; 10. Top pressure block; 11. Arc pressure groove; 12. Round roller; 13. Synchronous motor; 14. Rectangular rod; 15. Receiving groove; 16. Linear motor; 17. Rectangular shell; 18. Moving block. DETAILED DESCRIPTION

[0027] The technical solution of this embodiment will be clearly and completely described below in conjunction with the drawings in this embodiment. Obviously, the described embodiment is only a part of this embodiment, rather than all the embodiments. Example 1

[0028] The following combination Figure 1-Figure 5 This application is described in further detail.

[0029] A bellows welding fixture, comprising:

[0030] The support plate 1 is installed on the machine platform of the laser welding machine and is used to support the corrugated pipe. Two grooves 2 are provided on the top of the support plate 1. A through hole is provided between the two grooves 2. A bidirectional screw 3 is rotatably installed in the through hole. Both ends of the bidirectional screw 3 are threadedly connected to a moving block 18;

[0031] Two bottom support mechanisms, welded to the tops of the two moving blocks 18, are used to support the two bellows that need to be welded;

[0032] Two rectangular shells 17 are mounted on the outside of the two bottom support mechanisms;

[0033] Two height adjustment mechanisms, cooperating with two rectangular shells 17;

[0034] The two top pressing mechanisms are connected to the two height adjustment mechanisms and are symmetrically arranged with the two bottom supporting mechanisms, and are used to press and fix the corrugated pipe and control the rotation of the corrugated pipe.

[0035] Reference Figure 1 and Figure 2 In this embodiment, a servo motor 4 is installed on the outside of the support plate 1, and the output shaft of the servo motor 4 is fixedly installed with one end of the bidirectional screw 3, and the two ends of the bidirectional screw 3 are rotatably connected to the inner wall of the groove 2 through bearings.

[0036] Reference Figure 4 and Figure 5 In this embodiment, the bottom support mechanism includes a support block 5, a plurality of strip grooves 7 are opened on the top of the support block 5 to form a plurality of support bars 8, an arc groove 6 is opened on the top of the support block 5, and a plurality of balls 9 are arranged on the inner wall of the arc groove 6 on the support bar 8. The bellows is supported by the balls 9, which can reduce the friction of the bellows during rotation.

[0037] Reference Figure 3 In this embodiment, the height adjustment mechanism includes a rectangular rod 14, which is slidably installed inside a rectangular shell 17. A receiving groove 15 is provided at the bottom of the rectangular rod 14, and a linear motor 16 is provided in the receiving groove 15. The output shaft of the linear motor 16 is fixedly installed on the inner wall of the receiving groove 15, and the bottom end of the linear motor 16 is installed on the bottom inner wall of the rectangular shell 17.

[0038] Reference Figure 3 In this embodiment, the top pressing mechanism includes a top pressing block 10, which is fixedly installed on the side of the rectangular rod 14. An arc-shaped pressing groove 11 is provided at the bottom of the top pressing block 10. A plurality of round rollers 12 are rotatably installed on the inner wall of the arc-shaped pressing groove 11. A synchronous motor 13 is installed on the outer side of the plurality of round rollers 12. The synchronous motor 13 is installed on the outer side of the top pressing block 10.

[0039] Working principle: When in use, the electrical appliance can be controlled by connecting the power supply and the PLC controller. The existing technology will not be described here. The two bellows are placed inside the arc groove 6 on the two support blocks 5. Multiple support bars 8 are in contact with the depressions of the bellows and supported by the balls 9. Two linear motors 16 drive the two rectangular rods 14 to move downward, and the two rectangular rods 14 drive the two top pressing blocks 10 to move downward. The top pressing blocks 10 press the bellows tightly and fix them through multiple round rollers 12. The servo motor 4 drives the bidirectional screw 3 to rotate, and the bidirectional screw 3 drives the two moving blocks 18 are close to each other, the two moving blocks 18 drive the two supporting blocks 5 to approach each other, the two supporting blocks 5 drive the two bellows to contact each other, and then use a laser welding machine to weld. After the welding part, the two bellows need to be rotated for angle adjustment. The six synchronous motors 13 are started at the same time to drive the six round rollers 12 to rotate. The six round rollers 12 drive the two welded bellows to rotate for angle adjustment. The welding angle can be adjusted without releasing the fixed bellows, which improves work efficiency. After the welding is completed, the fixation of the bellows is released and the bellows can be removed. Example 2

[0040] The rest of the embodiment 2 is the same as the embodiment 1, except that a sliding ball is embedded in the bottom of the moving block 18, and the sliding ball is slidably connected to the inner wall of the groove 2. The moving block 18 can reduce the friction of moving in the groove 2 through the sliding ball. This application includes all the structural shapes, sizes and materials of the embodiment 1. In order to meet the specific usage conditions, they can be selected and adjusted. The accompanying drawings are all schematic structural diagrams, and the specific actual sizes can be appropriately adjusted.

[0041] The above is only a preferred specific implementation method of this embodiment, but the protection scope of this embodiment is not limited to this. Any technician familiar with this technical field can make equivalent replacements or changes based on the technical solution and utility model concept of this embodiment within the technical scope disclosed in this embodiment, and they should be covered by the protection scope of this embodiment.

Claims

1. A bellows welding fixture, characterized in that: include: A support plate (1) is mounted on a machine platform of a laser welding machine and is used to support the corrugated pipe. Two grooves (2) are provided on the top of the support plate (1). A through hole is provided between the two grooves (2). A bidirectional screw (3) is rotatably mounted in the through hole. Both ends of the bidirectional screw (3) are threadedly connected to a moving block (18). Two bottom support mechanisms, welded to the tops of the two moving blocks (18), are used to support the two bellows that need to be welded; Two rectangular shells (17) mounted on the outsides of the two bottom support mechanisms; Two height adjustment mechanisms, cooperating with the two rectangular shells (17); The two top pressing mechanisms are connected to the two height adjustment mechanisms and are symmetrically arranged with the two bottom supporting mechanisms, and are used to press and fix the corrugated pipe and control the rotation of the corrugated pipe.

2. The bellows welding fixture according to claim 1, characterized in that: A servo motor (4) is installed on the outside of the support plate (1), and the output shaft of the servo motor (4) is fixedly installed with one end of the bidirectional screw (3). The two ends of the bidirectional screw (3) are rotatably connected to the inner wall of the groove (2) through bearings.

3. The bellows welding fixture according to claim 1, characterized in that: The bottom support mechanism comprises a support block (5), a top of the support block (5) is provided with a plurality of strip grooves (7) to form a plurality of support bars (8), a top of the support block (5) is provided with an arc groove (6), and an inner wall of the arc groove (6) is provided with a plurality of balls (9) on the support bar (8).

4. The bellows welding fixture according to claim 1, characterized in that: The height adjustment mechanism comprises a rectangular rod (14) which is slidably mounted inside a rectangular shell (17).

5. The bellows welding fixture according to claim 4, characterized in that: A receiving groove (15) is provided at the bottom of the rectangular rod (14), a linear motor (16) is provided in the receiving groove (15), an output shaft of the linear motor (16) is fixedly mounted on the inner wall of the receiving groove (15), and the bottom end of the linear motor (16) is mounted on the bottom inner wall of the rectangular shell (17).

6. The bellows welding fixture according to claim 4, characterized in that: The top pressing mechanism comprises a top pressing block (10), the top pressing block (10) is fixedly mounted on the side of the rectangular rod (14), and an arc-shaped pressing groove (11) is provided at the bottom of the top pressing block (10).

7. The bellows welding fixture according to claim 6, characterized in that: A plurality of round rollers (12) are rotatably mounted on the inner wall of the arc-shaped pressing groove (11), and a synchronous motor (13) is mounted on the outer side of each of the round rollers (12). The synchronous motor (13) is mounted on the outer side of the top pressing block (10).

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